In this paper

a microcomputerized neutron moisture gauge is reported. This gauge consists of a neutron moisture sensor and instruments. It is developed from the neutron-moisture gauge for concrete mixer. Its character is that a TECH-81 single card microcomputer is used to play the role of count

compute and display. Its function has been increased ever the early type of the neutron moisture gauge. It has the function of computing compensated quantity of sand. It can acquire those measured data of several neutron sensors by the multichannel sampling

therefore it can measure moisture values of those sands in several hoppers simultaneously. The precision of the static state calibration curve is 0.24% wt. The error limits of the dynamic state check are <0.50%wt. It has satisfied the demands of the concrete production.